Results 1 to 10 of about 836 (157)

Studies on an Electromagnetic Transient Model of Offshore Wind Turbines and Lightning Transient Overvoltage Considering Lightning Channel Wave Impedance

Energies, 2017
In recent years, with the rapid development of offshore wind turbines (WTs), the problem of lightning strikes has become more and more prominent. In order to reduce the failure rate caused by the transient overvoltage of lightning struck offshore WTs ...
Li Zhang, Shengwei Fang, Guozheng Wang, Tong Zhao, Liang Zou   +4 more
doaj   +3 more sources

Study on the Fast Transient Process of Primary Equipment Operation in UHV Fixed Series Capacitors Based on PEEC Method [PDF]

Sensors
This manuscript proposes a fast transient simulation method based on PEEC to model overvoltage caused by spark gap and disconnecting switch operations in UHV series compensation (FSC).
Baojiang Tian, Kai Xu, Yingying Wang, Pei Guo, Chao Xiao, Wei Han, Yiran Dong, Jingang Wang   +7 more
doaj   +2 more sources

Measurement of Transient Overvoltages by Capacitive Electric Field Sensors. [PDF]

Sensors (Basel)
The accurate measurement and the investigation of electromagnetic transients are becoming more important, especially with the increasing integration of renewable energy sources into the power grid. These sources introduce new transient phenomena due to the extensive use of power electronics.
Probst FL, Beltle M, Tenbohlen S.
europepmc   +6 more sources

Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC

International Journal of Electrical Power & Energy Systems
The hybrid cascaded HVDC system(HC-HVDC) in sending end system is composed of an Line Commutated Converter(LCC) connected in series with a parallel group of Modular Multilevel Converters (MMC).
Jiangshan Liu, Fengting Li, Chunya Yin, Ruikang Chen, Lu Han, Yingping Shi   +5 more
doaj   +3 more sources

Coordinated preventive control strategy for transient overvoltage suppression in hybrid AC/DC sending-side systems

International Journal of Electrical Power & Energy Systems
As a predominant issue within line-commutated converters-based high voltage direct current (DC) transmission systems, commutation failure may trigger transient overvoltage problems and the tripping of large-scale renewable generation sets in hybrid AC/DC
Boyu Qin, Peicheng Chen, Zhe Zhang, Hongzhen Wang, Tao Ding   +4 more
doaj   +3 more sources

Coordinated optimization method for suppressing transient overvoltage caused by HVDC commutation failure considering large wind power integration

Energy Reports, 2023
In order to suppress the sending end transient overvoltage caused by HVDC commutation failure considering large wind power integration, this paper proposes a coordinated optimization method for the control parameters of DC and wind power, which can ...
Yang Li, Yuan Zeng, Wenxu Zhang, Chao Qin   +3 more
doaj   +3 more sources

Coordinated optimization of control parameters for suppressing transient overvoltage in wind power DC transmission systems

Frontiers in Energy Research
With the increasing proportion of new energy in power systems, the instability issues of novel power systems become more prominent. This paper addresses the transient overvoltage problem in wind power DC transmission systems by proposing a method for ...
Jie Zhao, Jinqiu Dou, Ming Li, Fangjie Wu, Xiaolin Shen, Yilin Liang, Lei Shang   +6 more
doaj   +3 more sources

Research on Ultra-Fast Transient Overvoltage Characteristics of Electric Locomotive

Applied Sciences
Operating overvoltage occurs when the pantograph or main breaker of an electric locomotive is operated, which is prone to causing insulation failure of high-voltage equipment.
Yike Guo, Fuqiang Tian, Hongqi Liu, Yufeng Yin   +3 more
doaj   +3 more sources

Generation mechanism and influencing factors of transient overvoltage on ultra high-voltage direct current transmission

Frontiers in Energy Research
The transient overvoltage caused by faults in ultra-high-voltage direct current (UHVDC) transmission lines and alternating current (AC) systems can adversely affect system safety and stability.
Weiwei Yao, Weiwei Yao, Jie Zhao, Jie Zhao, Jinqiu Dou, Jinqiu Dou, Youhan Deng, Youhan Deng, Yushu Li, Yushu Li, Yilin Liang, Yilin Liang, Jing Chen, Jing Chen   +13 more
doaj   +3 more sources

Research on Coordinated Control of Dynamic Reactive Power Sources of DC Blocking and Commutation Failure Transient Overvoltage in New Energy Transmission

Energies
With the large-scale deployment of renewable energy, transmission systems for new energy sources are increasingly exposed to transient overvoltage issues induced by DC blockages and commutation failures. To address the challenges of an imprecise response
Shuqin Sun, Zhenghai Yuan, Dezhi Chen, Zaihua Li, Xiaojun Tang, Yunting Song, Guanghao Zhou   +6 more
doaj   +3 more sources